12132304323440 has 160 divisors (see below), whose sum is σ = 32374709600256. Its totient is φ = 4141930152960.

The previous prime is 12132304323431. The next prime is 12132304323457. The reversal of 12132304323440 is 4432340323121.

It is a super-2 number, since 2×12132304323440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12132304323397 and 12132304323406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276636554 + ... + 276680406.

Almost surely, 2^{12132304323440} is an apocalyptic number.

12132304323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12132304323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16187354800128).

12132304323440 is an abundant number, since it is smaller than the sum of its proper divisors (20242405276816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12132304323440 is a wasteful number, since it uses less digits than its factorization.

12132304323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45967 (or 45961 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 12132304323440 its reverse (4432340323121), we get a palindrome (16564644646561).

The spelling of 12132304323440 in words is "twelve trillion, one hundred thirty-two billion, three hundred four million, three hundred twenty-three thousand, four hundred forty".